R44 Service Bulletins
Number | Subject | Date |
---|---|---|
R44 SB-116 | Ground Handling Wheel Support Reorientation | 19 FEB 2024 |
R44 SB-115 | Loose Gearmotors on Belt-Tension Actuators | 27 OCT 2023 |
R44 SB-114 | D270-1 Governor Controller Upgrade | 28 JUN 2023 |
R44 SB-113 | Actuator Lower Bearing A185 Brackets | 16 MAR 2023 |
R44 SB-112A Supersedes R44 SB-112 | Tail Rotor Blade Inspection and Replacement Ref. Tail Rotor Blade Replacement Policy | 26 MAR 2024 |
R44 SB-111 Ref. AD 2022-12-08 | C143-2 Sensor (Engine RPM) Wiring AMOC to AD 2022-12-08 | 23 FEB 2022 |
R44 SB-110 Ref. AD 2022-19-12 | C029-3 Tail Rotor Blade Cracks Ref. Maintenance Record Appendix for AD | 06 JAN 2022 |
R44 SB-109 | Hydraulic Controls Pre-Takeoff Check Ref. Hydraulic Controls Pre-Takeoff Check Tutorial Video | 30 JUN 2021 |
R44 SB-108 Ref. AD 2022-19-12 | C029-3 Tail Rotor Blade Cracks Ref. Maintenance Record Appendix for AD | 30 JUN 2021 |
R44 SB-107B Supersedes R44 SB-107A | Fire Extinguisher Removal | 15 JUL 2021 |
R44 SB-106 | HeliSAS Autopilot Interface with Garmin PFD | 21 AUG 2020 |
R44 SB-105 | Alternator Filter Installation | 21 AUG 2020 |
R44 SB-104 Supersedes R44 SB-98B | Air/Oil Separator Hose | 11 MAR 2020 |
R44 SB-103 Supersedes R44 SL-68B | Main Rotor Blade Tip Plate Permanent Removal & Sealant Application | 02 DEC 2019 |
R44 SB-102 | Chin Inspection Hole and Access Cover | 29 OCT 2019 |
R44 SB-101 | HeliSAS Flight Control Computer Ref. S-TEC Service Letter SL 19-011 | 12 AUG 2019 |
R44 SB-100 | R44 II Induction Hose | 03 JUL 2019 |
R44 SB-99 | 24-volt Battery Electrolyte Leakage | 03 JUL 2019 |
R44 SB-98B Superseded by R44 SB-104 | Air/Oil Separator Hose Spring | 03 MAY 2019 |
R44 SB-97 Ref. AD 2020-18-08 | R44 II Induction Hose | 11 APR 2019 |
R44 SB-96 | D602-1 Time Delay Assembly | 02 OCT 2018 |
R44 SB-95 | Main Gearbox Upgrades | 20 DEC 2017 |
R44 SB-94 Ref. R44 SL-61B | Actuator Lower Bearing A185 Brackets | 08 JUN 2017 |
R44 SB-93A Supersedes R44 SB-93 | Horizontal Stabilizer Nutplates | 21 JUL 2017 |
R44 SB-92A Supersedes R44 SB-92 | Tail Rotor Drive Shaft Damper Bearing | 20 DEC 2017 |
R44 SB-91 | Ammeter Circuit Fuse Protection | 14 NOV 2016 |
R44 SB-90 | Revised Instrument Marking | 14 NOV 2016 |
R44 SB-89 Ref. AD 2016-26-04 | Main Rotor Blade Modification Ref. Main Rotor Blade Modification Tutorial Video Ref. MSDSs and Technical Data Sheets | 30 MAR 2015 |
R44 SB-88 | Landing Gear Attach Nuts | 08 DEC 2014 |
R44 SB-87 | B771-2 (Reusable) Air Filters | 14 OCT 2014 |
R44 SB-86 | Rotor RPM Sender Magnets | 03 JUL 2013 |
R44 SB-85 | C771-1 Air Filter Deterioration | 31 AUG 2012 |
R44 SB-84 | Fuel Cap Decal | 30 MAY 2012 |
R44 SB-83 Ref: AD 2020-08-10 | Tail Rotor Blade Fatigue Cracks Ref. Maintenance Record Appendix for AD | 30 MAY 2012 |
R44 SB-82 | Rotor Brake Switch | 21 FEB 2012 |
R44 SB-81 | Hydraulic Servos | 21 FEB 2012 |
R44 SB-80 | Pop-Out Float Cylinder Valve | 07 SEP 2011 |
R44 SB-79 Supersedes R44 SL-33 | C188-3 Sprag Clutches | 20 DEC 2010 |
R44 SB-78B Ref. R44 Fuel Bladder Rebate Extended | Bladder Fuel Tank Retrofit | 28 SEP 2012 |
R44 SB-77 | Clutch Actuator Fuse Holder Wiring | 26 MAY 2010 |
R44 SB-76 | Air Conditioning Installation Upgrades | 30 APR 2010 |
R44 SB-75 | Door Lower Hinge Pins | 30 APR 2010 |
R44 SB-74 | MRGB Input Yoke Retaining Nut Torque | 30 APR 2010 |
R44 SB-73 | Battery Relay Bypass Circuit Fuse | 30 APR 2010 |
R44 SB-72A Supersedes R44 SL-24 Ref. AD 2014-23-16 | Main Rotor Blade Bond Inspection Ref. Tap Test Tutorial Video Ref. Maintenance Record Appendix for AD 2014-23-16 AMOC for AD 2014-23-16 | 19 JUL 2012 |
R44 SB-71 Supersedes R44 SB-58A | R44 II Throttle Link | 25 MAR 2009 |
R44 SB-70 | Carbon Monoxide (CO) Detector Retrofit | 25 MAR 2009 |
R44 SB-69 | Gascolator Assembly | 25 MAR 2009 |
R44 SB-68 Supersedes R44 SB-31 | Rigid Fuel Line Replacement | 25 MAR 2009 |
R44 SB-67 | R44 II Fuel Hose Supports | 06 NOV 2008 |
R44 SB-66 Supersedes R44 SB-45 | D202-2 Bracket Replacement | 18 MAR 2008 |
R44 SB-65 | Air Conditioning Duct Wiring | 22 FEB 2008 |
R44 SB-64 | Removable Collective Spring Pin | 22 FEB 2008 |
R44 SB-63 Ref. AD 2010-24-03 | Pedal Support Safety Tabs | 22 FEB 2008 |
R44 SB-62 | R44 II Throttle Linkage | 19 DEC 2007 |
R44 SB-61 | Main Rotor Blade Erosion | 29 MAR 2007 |
R44 SB-60 | C771-1 Air Filters with Orange Rubber | 15 SEP 2006 |
R44 SB-59 | C046-18 Frame Tube Clamp | 09 AUG 2006 |
R44 SB-58A Superseded by R44 SB-71 | R44 II Throttle Link | 01 SEP 2006 |
R44 SB-57 | KI-176 R44 Tailpipe Extension Kit | 29 MAR 2006 |
R44 SB-56 Ref. AD 2007-11-01 | Seat Belt Buckle Assemblies | 29 MAR 2006 |
R44 SB-55 Supersedes R44 SB-54 | R44 II Fuel Control Reorientation | 20 JUL 2005 |
R44 SB-54 Superseded by R44 SB-55 | R44 II Fuel Control Venturi | 25 APR 2005 |
R44 SB-53 | C046-18 Frame Tube | 27 MAY 2004 |
R44 SB-52 | Comm Antenna Tips | 27 MAY 2004 |
R44 SB-51 | NAS6605-31 Bolts | 24 NOV 2003 |
R44 SB-50 | R44 II Oil Line Clamp | 11 SEP 2003 |
R44 SB-49 | Engine Alternate Air Intake | 11 SEP 2003 |
R44 SB-48 | R44 II Fuel Control Safety Wire | 11 SEP 2003 |
R44 SB-47 | R44 II Fuel Control Inlet Fitting | 20 JUN 2003 |
R44 SB-46 | D318-1 Muffler and Tailpipe Shield Installation | 15 NOV 2002 |
R44 SB-45 Superseded by R44 SB-66 | D202-2 Bracket Replacement | 15 NOV 2002 |
R44 SB-44 | Hydraulic Pump Lines and Fittings | 01 AUG 2001 |
R44 SB-43A Ref. AD 2003-04-05 | Tail Rotor Pitch Control Bearings | 10 JUN 2002 |
R44 SB-42 Cancelled 15 OCT 2004 | C181-3 Lower Clutch Actuator Bearing Lubrication | 01 AUG 2001 |
R44 SB-41A | Tail Rotor Rigging | 10 JUN 2002 |
R44 SB-40 | Emergency Pop-Out Float Pressure Cylinder Valve | 12 SEP 2000 |
R44 SB-39 Ref. AD 2001-20-18 | Horizontal to Vertical Stabilizer Attach Channels | 12 SEP 2000 |
R44 SB-38 | Hydraulic Reservoir Sequence Valve Inspection | 03 MAR 2000 |
R44 SB-37 | Aft C121-25 Push-Pull Tube Contact with Mast Fairing Rib | 17 JAN 2000 |
R44 SB-36 Ref. AD 99-07-18 and AD 00-08-04 | C188-3 Sprag Clutch | 05 NOV 1999 |
R44 SB-35 Ref. AD 99-17-17 | C908-1 Yoke Replacement | 26 JUL 1999 |
R44 SB-34 | Tail Rotor Gearbox Output Shaft Bearing Preload | 21 JUN 1999 |
R44 SB-33 | C051-1 or -2 Belt Tension Actuator | 03 MAY 1999 |
R44 SB-32 Ref. AD 99-07-18 and AD 00-08-04 | C188-3 Sprag Clutch | 22 MAR 1999 |
R44 SB-31 Superseded by R44 SB-68 Ref. AD 00-07-03 | Wire Harness Contact with C726-2 Fuel Line Assembly | 28 OCT 1998 |
R44 SB-30 | Auxiliary Fuel Tank Drain Tube Shutoff Clamp | 28 OCT 1998 |
R44 SB-29 Ref. AD 99-03-05 and AD 2004-05-24 | Replacement of Crankshaft Gear Retaining Bolt | 09 JUL 1998 |
R44 SB-28A Ref. AD 98-22-16 | R44 Main Rotor Blade Replacement | 27 OCT 1998 |
R44 SB-27B Ref. AD 98-22-16 | Main Rotor Blade Inspection | 18 JUN 1998 |
R44 SB-26 Ref. AD 98-04-12 | Lateral Cyclic Trim Assembly | 31 JAN 1998 |
R44 SB-25 Ref. AD 98-05-10 | Oil Line Elbows | 01 OCT 1997 |
R44 SB-24 | Removal of Paint from Tail Rotor Gearbox Attachment Surfaces | 01 OCT 1997 |
R44 SB-23 Ref. AD 97-16-02 | Replacement of C018-1 Clutch Assembly | 30 MAY 1997 |
R44 SB-22 | Tail Rotor Guard | 30 MAY 1997 |
R44 SB-21 Ref. AD 97-16-02 | Belt Tension Actuator Switches | 18 APR 1997 |
R44 SB-20 | C315 Collective Support Weldment | 16 APR 1997 |
R44 SB-19 | Lateral Cyclic Trim Assembly Spring Shaft Wear | 16 APR 1997 |
R44 SB-18 | Pilot's Heater Outlet Air Supply Hose | 16 APR 1997 |
R44 SB-17 Ref. AD 98-21-36 superseded by AD 99-23-01 | Pilot's Grip Assembly | 18 DEC 1996 |
R44 SB-16 | Replacement of C309-1 Panel Assembly with V-belt Restraint | 22 OCT 1996 |
R44 SB-15 Ref. AD 96-18-22 | Main Rotor Gearbox Ring Gear Bolts | 02 AUG 1996 |
R44 SB-14 Supersedes R44 SB-02, R44 SB-03, and R44 SB-09 | Replacement of C007-3 or C007-4 Shaft Assembly and D174-1 Fanwheel | 26 APR 1996 |
R44 SB-13 | Collective Spring Assembly and Spring Assembly Support Replacement | 26 DEC 1995 |
R44 SB-12 | Cyclic Damper Replacement | 11 SEP 1995 |
R44 SB-11 | Replacement of CAT Gage and Relocation of Probe | 11 SEP 1995 |
R44 SB-10 | Upper and Lower Swashplate Fork and Arm Linkage Assemblies | 11 SEP 1995 |
R44 SB-09 Superseded by R44 SB-14 | Fan Nut Torque | 11 SEP 1995 |
R44 SB-08 | Gascolator Drain Valve Torque | 08 JUN 1995 |
R44 SB-07A | Low RPM Warning Unit Adjustment | 08 JUN 1995 |
R44 SB-06 Ref. AD 95-11-10 | Placard to Prohibit Pushovers | 23 MAY 1995 |
R44 SB-05 | Main Rotor Droop Stops and Teeter Stops | 26 APR 1995 |
R44 SB-04 Ref. AD 95-09-07 | Replacement of Guides for C121-7 Push-Pull Tubes | 24 JAN 1995 |
R44 SB-03 Superseded by R44 SB-14 | Replacement of C007-3 Shaft Assembly and/or D174-1 Fanwheel | 18 NOV 1994 |
R44 SB-02 Superseded by R44 SB-14 | Inspection of Cooling Fan | 24 OCT 1994 |
R44 SB-01A | Required Modification of Cyclic Trim Motors | 26 MAY 1994 |